Write a detail note on denitrification of wastewater as a process of nutrient removal.
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Denitrification is a microbially mediated process where nitrate is used as a form of energy for denitrifiers – these are soil bacteria – and they reduce it into various forms of gaseous emissions. One of those gaseous forms of nitrogen is nitrous oxide.
Denitrification is commonly used to remove nitrogen from sewage and municipal wastewater. It is also an instrumental process in constructed wetlands and riparian zones for the prevention of groundwater pollution with nitrate resulting from excessive agricultural or residential fertilizer usage.
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